import router from './router'
import store from './store'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import {getToken} from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({showSpinner: false}) // NProgress Configuration

const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist

router.beforeEach(async (to, from, next) => {
  console.log('from: ' + from.path + ' to: ' + to.path)
  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title)

  // determine whether the user has logged in
  const hasToken = getToken()
  // console.log('hasToken:' + hasToken)
  //
  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({path: '/'})
      NProgress.done()
    } else {
      // determine whether the user has obtained his permission roles through getInfo
      const roles = store.getters.roles
      const isLoadedMenus = store.getters.isLoadedMenus
      if (!isLoadedMenus) {
        try{
          // clear routes
          await store.dispatch('permission/clearRoutes')

          // generate accessible routes map based on roles
          const previewRoutes = await store.dispatch('permission/generatePreviewRoutes', roles)
          const accessRoutes = await store.dispatch('permission/generateRoutes', roles)

          // dynamically add accessible routes
          router.addRoutes(previewRoutes)
          router.addRoutes(accessRoutes)

          // modify isLoadedMenus = true
          await store.dispatch('user/loadedMenus')

          // hack method to ensure that addRoutes is complete
          // set the replace: true, so the navigation will not leave a history record
          next({...to, replace: true})
        }catch (e) {
          console.log(e)
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      } else {
        next()
      }
      /* if (hasRoles) {
        next()
      } else {
        try {
          // get user info
          // note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
          const { roles } = await store.dispatch('user/getInfo')
          console.log('roles:' + roles)

          // generate accessible routes map based on roles
          const accessRoutes = await store.dispatch('permission/generateRoutes', roles)

          // dynamically add accessible routes
          router.addRoutes(accessRoutes)

          // hack method to ensure that addRoutes is complete
          // set the replace: true, so the navigation will not leave a history record
          next({ ...to, replace: true })
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }*/
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
